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author | Dees_Troy <dees_troy@teamw.in> | 2012-09-05 21:24:24 +0200 |
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committer | Dees_Troy <dees_troy@teamw.in> | 2012-09-05 21:24:31 +0200 |
commit | 51a0e82eb29a6dfc79f93479883383fbdbf8bcc2 (patch) | |
tree | 52fc18206eb0feba9f50dc3b0ede9fdc5e40f35e /minuitwrp/events.c | |
parent | Initial stub of partitions.hpp (diff) | |
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Diffstat (limited to 'minuitwrp/events.c')
-rw-r--r-- | minuitwrp/events.c | 640 |
1 files changed, 640 insertions, 0 deletions
diff --git a/minuitwrp/events.c b/minuitwrp/events.c new file mode 100644 index 000000000..52c5a7d50 --- /dev/null +++ b/minuitwrp/events.c @@ -0,0 +1,640 @@ +/* + * Copyright (C) 2007 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <fcntl.h> +#include <dirent.h> +#include <sys/poll.h> +#include <limits.h> + +#include <linux/input.h> + +#include "../common.h" + +#include "minui.h" + +//#define _EVENT_LOGGING + +#define MAX_DEVICES 16 + +#define VIBRATOR_TIMEOUT_FILE "/sys/class/timed_output/vibrator/enable" +#define VIBRATOR_TIME_MS 50 + +#define SYN_REPORT 0x00 +#define SYN_CONFIG 0x01 +#define SYN_MT_REPORT 0x02 + +#define ABS_MT_POSITION 0x2a /* Group a set of X and Y */ +#define ABS_MT_AMPLITUDE 0x2b /* Group a set of Z and W */ +#define ABS_MT_SLOT 0x2f +#define ABS_MT_TOUCH_MAJOR 0x30 +#define ABS_MT_TOUCH_MINOR 0x31 +#define ABS_MT_WIDTH_MAJOR 0x32 +#define ABS_MT_WIDTH_MINOR 0x33 +#define ABS_MT_ORIENTATION 0x34 +#define ABS_MT_POSITION_X 0x35 +#define ABS_MT_POSITION_Y 0x36 +#define ABS_MT_TOOL_TYPE 0x37 +#define ABS_MT_BLOB_ID 0x38 +#define ABS_MT_TRACKING_ID 0x39 +#define ABS_MT_PRESSURE 0x3a +#define ABS_MT_DISTANCE 0x3b + +enum { + DOWN_NOT, + DOWN_SENT, + DOWN_RELEASED, +}; + +struct virtualkey { + int scancode; + int centerx, centery; + int width, height; +}; + +struct position { + int x, y; + int synced; + struct input_absinfo xi, yi; +}; + +struct ev { + struct pollfd *fd; + + struct virtualkey *vks; + int vk_count; + + char deviceName[64]; + + int ignored; + + struct position p, mt_p; + int down; +}; + +static struct pollfd ev_fds[MAX_DEVICES]; +static struct ev evs[MAX_DEVICES]; +static unsigned ev_count = 0; + +static inline int ABS(int x) { + return x<0?-x:x; +} + +int vibrate(int timeout_ms) +{ + char str[20]; + int fd; + int ret; + + fd = open(VIBRATOR_TIMEOUT_FILE, O_WRONLY); + if (fd < 0) + return -1; + + ret = snprintf(str, sizeof(str), "%d", timeout_ms); + ret = write(fd, str, ret); + close(fd); + + if (ret < 0) + return -1; + + return 0; +} + +/* Returns empty tokens */ +static char *vk_strtok_r(char *str, const char *delim, char **save_str) +{ + if(!str) + { + if(!*save_str) + return NULL; + + str = (*save_str) + 1; + } + *save_str = strpbrk(str, delim); + + if (*save_str) + **save_str = '\0'; + + return str; +} + +static int vk_init(struct ev *e) +{ + char vk_path[PATH_MAX] = "/sys/board_properties/virtualkeys."; + char vks[2048], *ts = NULL; + ssize_t len; + int vk_fd; + int i; + + e->vk_count = 0; + + len = strlen(vk_path); + len = ioctl(e->fd->fd, EVIOCGNAME(sizeof(e->deviceName)), e->deviceName); + if (len <= 0) + { + LOGE("Unable to query event object.\n"); + return -1; + } +#ifdef _EVENT_LOGGING + LOGI("Event object: %s\n", e->deviceName); +#endif + + // Blacklist these "input" devices + if (strcmp(e->deviceName, "bma250") == 0) + { + e->ignored = 1; + } + + strcat(vk_path, e->deviceName); + + // Some devices split the keys from the touchscreen + e->vk_count = 0; + vk_fd = open(vk_path, O_RDONLY); + if (vk_fd >= 0) + { + len = read(vk_fd, vks, sizeof(vks)-1); + close(vk_fd); + if (len <= 0) + return -1; + + vks[len] = '\0'; + + /* Parse a line like: + keytype:keycode:centerx:centery:width:height:keytype2:keycode2:centerx2:... + */ + for (ts = vks, e->vk_count = 1; *ts; ++ts) { + if (*ts == ':') + ++e->vk_count; + } + + if (e->vk_count % 6) { + LOGW("minui: %s is %d %% 6\n", vk_path, e->vk_count % 6); + } + e->vk_count /= 6; + if (e->vk_count <= 0) + return -1; + + e->down = DOWN_NOT; + } + + ioctl(e->fd->fd, EVIOCGABS(ABS_X), &e->p.xi); + ioctl(e->fd->fd, EVIOCGABS(ABS_Y), &e->p.yi); + e->p.synced = 0; +#ifdef _EVENT_LOGGING + LOGI("EV: ST minX: %d maxX: %d minY: %d maxY: %d\n", e->p.xi.minimum, e->p.xi.maximum, e->p.yi.minimum, e->p.yi.maximum); +#endif + + ioctl(e->fd->fd, EVIOCGABS(ABS_MT_POSITION_X), &e->mt_p.xi); + ioctl(e->fd->fd, EVIOCGABS(ABS_MT_POSITION_Y), &e->mt_p.yi); + e->mt_p.synced = 0; +#ifdef _EVENT_LOGGING + LOGI("EV: MT minX: %d maxX: %d minY: %d maxY: %d\n", e->mt_p.xi.minimum, e->mt_p.xi.maximum, e->mt_p.yi.minimum, e->mt_p.yi.maximum); +#endif + + e->vks = malloc(sizeof(*e->vks) * e->vk_count); + + for (i = 0; i < e->vk_count; ++i) { + char *token[6]; + int j; + + for (j = 0; j < 6; ++j) { + token[j] = vk_strtok_r((i||j)?NULL:vks, ":", &ts); + } + + if (strcmp(token[0], "0x01") != 0) { + /* Java does string compare, so we do too. */ + LOGW("minui: %s: ignoring unknown virtual key type %s\n", vk_path, token[0]); + continue; + } + + e->vks[i].scancode = strtol(token[1], NULL, 0); + e->vks[i].centerx = strtol(token[2], NULL, 0); + e->vks[i].centery = strtol(token[3], NULL, 0); + e->vks[i].width = strtol(token[4], NULL, 0); + e->vks[i].height = strtol(token[5], NULL, 0); + } + + return 0; +} + +int ev_init(void) +{ + DIR *dir; + struct dirent *de; + int fd; + + dir = opendir("/dev/input"); + if(dir != 0) { + while((de = readdir(dir))) { +// fprintf(stderr,"/dev/input/%s\n", de->d_name); + if(strncmp(de->d_name,"event",5)) continue; + fd = openat(dirfd(dir), de->d_name, O_RDONLY); + if(fd < 0) continue; + + ev_fds[ev_count].fd = fd; + ev_fds[ev_count].events = POLLIN; + evs[ev_count].fd = &ev_fds[ev_count]; + + /* Load virtualkeys if there are any */ + vk_init(&evs[ev_count]); + + ev_count++; + if(ev_count == MAX_DEVICES) break; + } + } + + return 0; +} + +void ev_exit(void) +{ + while (ev_count-- > 0) { + if (evs[ev_count].vk_count) { + free(evs[ev_count].vks); + evs[ev_count].vk_count = 0; + } + close(ev_fds[ev_count].fd); + } +} + +static int vk_inside_display(__s32 value, struct input_absinfo *info, int screen_size) +{ + int screen_pos; + + if (info->minimum == info->maximum) + return 0; + + screen_pos = (value - info->minimum) * (screen_size - 1) / (info->maximum - info->minimum); + return (screen_pos >= 0 && screen_pos < screen_size); +} + +static int vk_tp_to_screen(struct position *p, int *x, int *y) +{ + if (p->xi.minimum == p->xi.maximum || p->yi.minimum == p->yi.maximum) + { + // In this case, we assume the screen dimensions are the same. + *x = p->x; + *y = p->y; + return 0; + } + +#ifdef _EVENT_LOGGING + LOGI("EV: p->x=%d x-range=%d,%d fb-width=%d\n", p->x, p->xi.minimum, p->xi.maximum, gr_fb_width()); +#endif + +#ifndef RECOVERY_TOUCHSCREEN_SWAP_XY + int fb_width = gr_fb_width(); + int fb_height = gr_fb_height(); +#else + // We need to swap the scaling sizes, too + int fb_width = gr_fb_height(); + int fb_height = gr_fb_width(); +#endif + + *x = (p->x - p->xi.minimum) * (fb_width - 1) / (p->xi.maximum - p->xi.minimum); + *y = (p->y - p->yi.minimum) * (fb_height - 1) / (p->yi.maximum - p->yi.minimum); + + if (*x >= 0 && *x < fb_width && + *y >= 0 && *y < fb_height) + { + return 0; + } + + return 1; +} + +/* Translate a virtual key in to a real key event, if needed */ +/* Returns non-zero when the event should be consumed */ +static int vk_modify(struct ev *e, struct input_event *ev) +{ + static int downX = -1, downY = -1; + static int discard = 0; + static int lastWasSynReport = 0; + static int touchReleaseOnNextSynReport = 0; + int i; + int x, y; + + // This is used to ditch useless event handlers, like an accelerometer + if (e->ignored) return 1; + + if (ev->type == EV_REL && ev->code == REL_Z) + { + // This appears to be an accelerometer or another strange input device. It's not the touchscreen. +#ifdef _EVENT_LOGGING + LOGI("EV: Device disabled due to non-touchscreen messages.\n"); +#endif + e->ignored = 1; + return 1; + } + +#ifdef _EVENT_LOGGING + LOGI("EV: %s => type: %x code: %x value: %d\n", e->deviceName, ev->type, ev->code, ev->value); +#endif + + // Handle keyboard events, value of 1 indicates key down, 0 indicates key up + if (ev->type == EV_KEY) { + return 0; + } + + if (ev->type == EV_ABS) { + switch (ev->code) { + + case ABS_X: //00 + e->p.synced |= 0x01; + e->p.x = ev->value; +#ifdef _EVENT_LOGGING + LOGI("EV: %s => EV_ABS ABS_X %d\n", e->deviceName, ev->value); +#endif + break; + + case ABS_Y: //01 + e->p.synced |= 0x02; + e->p.y = ev->value; +#ifdef _EVENT_LOGGING + LOGI("EV: %s => EV_ABS ABS_Y %d\n", e->deviceName, ev->value); +#endif + break; + + case ABS_MT_POSITION: //2a + e->mt_p.synced = 0x03; + if (ev->value == (1 << 31)) + { + e->mt_p.x = 0; + e->mt_p.y = 0; + lastWasSynReport = 1; + } + else + { + lastWasSynReport = 0; + e->mt_p.x = (ev->value & 0x7FFF0000) >> 16; + e->mt_p.y = (ev->value & 0xFFFF); + } + break; + + case ABS_MT_TOUCH_MAJOR: //30 + if (ev->value == 0) + { + // We're in a touch release, although some devices will still send positions as well + e->mt_p.x = 0; + e->mt_p.y = 0; + touchReleaseOnNextSynReport = 1; + } +#ifdef _EVENT_LOGGING + LOGI("EV: %s => EV_ABS ABS_MT_TOUCH_MAJOR %d\n", e->deviceName, ev->value); +#endif + break; + + case ABS_MT_PRESSURE: //3a + if (ev->value == 0) + { + // We're in a touch release, although some devices will still send positions as well + e->mt_p.x = 0; + e->mt_p.y = 0; + touchReleaseOnNextSynReport = 1; + } +#ifdef _EVENT_LOGGING + LOGI("EV: %s => EV_ABS ABS_MT_PRESSURE %d\n", e->deviceName, ev->value); +#endif + break; + + case ABS_MT_POSITION_X: //35 + e->mt_p.synced |= 0x01; + e->mt_p.x = ev->value; +#ifdef _EVENT_LOGGING + LOGI("EV: %s => EV_ABS ABS_MT_POSITION_X %d\n", e->deviceName, ev->value); +#endif + break; + + case ABS_MT_POSITION_Y: //36 + e->mt_p.synced |= 0x02; + e->mt_p.y = ev->value; +#ifdef _EVENT_LOGGING + LOGI("EV: %s => EV_ABS ABS_MT_POSITION_Y %d\n", e->deviceName, ev->value); +#endif + break; + +#ifdef _EVENT_LOGGING + // All of these items are strictly for logging purposes only. Return 1 because they don't need to be handled. + case ABS_MT_TOUCH_MINOR: //31 + LOGI("EV: %s => EV_ABS ABS_MT_TOUCH_MINOR %d\n", e->deviceName, ev->value); + return 1; + break; + + case ABS_MT_WIDTH_MAJOR: //32 + LOGI("EV: %s => EV_ABS ABS_MT_WIDTH_MAJOR %d\n", e->deviceName, ev->value); + return 1; + break; + + case ABS_MT_WIDTH_MINOR: //33 + LOGI("EV: %s => EV_ABS ABS_MT_WIDTH_MINOR %d\n", e->deviceName, ev->value); + return 1; + break; + + case ABS_MT_ORIENTATION: //34 + LOGI("EV: %s => EV_ABS ABS_MT_ORIENTATION %d\n", e->deviceName, ev->value); + return 1; + break; + + case ABS_MT_TOOL_TYPE: //37 + LOGI("EV: %s => EV_ABS ABS_MT_TOOL_TYPE %d\n", e->deviceName, ev->value); + return 1; + break; + + case ABS_MT_BLOB_ID: //38 + LOGI("EV: %s => EV_ABS ABS_MT_BLOB_ID %d\n", e->deviceName, ev->value); + return 1; + break; + + case ABS_MT_TRACKING_ID: //39 + LOGI("EV: %s => EV_ABS ABS_MT_TRACKING_ID %d\n", e->deviceName, ev->value); + return 1; + break; + + case ABS_MT_DISTANCE: //3b + LOGI("EV: %s => EV_ABS ABS_MT_DISTANCE %d\n", e->deviceName, ev->value); + return 1; + break; +#endif + + default: + // This is an unhandled message, just skip it + return 1; + } + + if (ev->code != ABS_MT_POSITION) + { + lastWasSynReport = 0; + return 1; + } + } + + // Check if we should ignore the message + if (ev->code != ABS_MT_POSITION && (ev->type != EV_SYN || (ev->code != SYN_REPORT && ev->code != SYN_MT_REPORT))) + { + lastWasSynReport = 0; + return 0; + } + +#ifdef _EVENT_LOGGING + if (ev->type == EV_SYN && ev->code == SYN_REPORT) LOGI("EV: %s => EV_SYN SYN_REPORT\n", e->deviceName); + if (ev->type == EV_SYN && ev->code == SYN_MT_REPORT) LOGI("EV: %s => EV_SYN SYN_MT_REPORT\n", e->deviceName); +#endif + + // Discard the MT versions + if (ev->code == SYN_MT_REPORT) return 0; + + if (lastWasSynReport == 1 || touchReleaseOnNextSynReport == 1) + { + // Reset the value + touchReleaseOnNextSynReport = 0; + + // We are a finger-up state + if (!discard) + { + // Report the key up + ev->type = EV_ABS; + ev->code = 0; + ev->value = (downX << 16) | downY; + } + downX = -1; + downY = -1; + if (discard) + { + discard = 0; + return 1; + } + return 0; + } + lastWasSynReport = 1; + + // Retrieve where the x,y position is + if (e->p.synced & 0x03) + { + vk_tp_to_screen(&e->p, &x, &y); + } + else if (e->mt_p.synced & 0x03) + { + vk_tp_to_screen(&e->mt_p, &x, &y); + } + else + { + // We don't have useful information to convey + return 1; + } + +#ifdef RECOVERY_TOUCHSCREEN_SWAP_XY + x ^= y; + y ^= x; + x ^= y; +#endif +#ifdef RECOVERY_TOUCHSCREEN_FLIP_X + x = gr_fb_width() - x; +#endif +#ifdef RECOVERY_TOUCHSCREEN_FLIP_Y + y = gr_fb_height() - y; +#endif + +#ifdef _EVENT_LOGGING + LOGI("EV: x: %d y: %d\n", x, y); +#endif + + // Clear the current sync states + e->p.synced = e->mt_p.synced = 0; + + // If we have nothing useful to report, skip it + if (x == -1 || y == -1) return 1; + + // On first touch, see if we're at a virtual key + if (downX == -1) + { + // Attempt mapping to virtual key + for (i = 0; i < e->vk_count; ++i) + { + int xd = ABS(e->vks[i].centerx - x); + int yd = ABS(e->vks[i].centery - y); + + if (xd < e->vks[i].width/2 && yd < e->vks[i].height/2) + { + ev->type = EV_KEY; + ev->code = e->vks[i].scancode; + ev->value = 1; + + vibrate(VIBRATOR_TIME_MS); + + // Mark that all further movement until lift is discard, + // and make sure we don't come back into this area + discard = 1; + downX = 0; + return 0; + } + } + } + + // If we were originally a button press, discard this event + if (discard) + { + return 1; + } + + // Record where we started the touch for deciding if this is a key or a scroll + downX = x; + downY = y; + + ev->type = EV_ABS; + ev->code = 1; + ev->value = (x << 16) | y; + return 0; +} + +int ev_get(struct input_event *ev, unsigned dont_wait) +{ + int r; + unsigned n; + + do { + r = poll(ev_fds, ev_count, dont_wait ? 0 : -1); + + if(r > 0) { + for(n = 0; n < ev_count; n++) { + if(ev_fds[n].revents & POLLIN) { + r = read(ev_fds[n].fd, ev, sizeof(*ev)); + if(r == sizeof(*ev)) { + if (!vk_modify(&evs[n], ev)) + return 0; + } + } + } + } + } while(dont_wait == 0); + + return -1; +} + +int ev_wait(int timeout) +{ + return -1; +} + +void ev_dispatch(void) +{ + return; +} + +int ev_get_input(int fd, short revents, struct input_event *ev) +{ + return -1; +} |